Art of gumming paper



Nov. 8, 1932. w HUEMPFNER 1,886,550-

ART OF GUMMING PAPER Filed Nov; 13. 1930 Patented Nov. 8, 1932 UNITED STATES PATENT OFFICE FERDINAND W. HUEKPFNEB, 01' OAK PARK, ILLINOIS, ASSIGNOR TO MID-STATES GUIME) 00., A CORPORATION OF ILLINOIS ART OF GUMMING PAPER Application fled November 13, 1980. Serial No. 495,519.

This invention relates to improvements in the art of gumming paper and is particularly useful in the manufacture of gummed bands and the like.

'5 One of the objects of the invention is to provide a method for gumming paper by which a superior product can be produced at less expense and in greater volume. Another ob ject is to produce a gummed paper product which is substantially fiat, the disadvantageof curling, etc., being avoided by the method of manufacture. A further object is to produce products such as bands, wrappers, etc. which lie fiat and do not tend to curl or peel as do bands, etc. now in use and which may be readily secured in position to form a sturdy bond or closure. Other objects and advantages will appear as the specification proceeds.

In the preferred embodiment of the invention illustrated in the drawing Fig. 1 represents a broken view of a sheet of paper to which gummed strips have been applied in accordance with my invention;

Fig. 2 is a. perspective view of a finished prodnet in the form of a band, having a gummed strip applied at one end thereof; and Fig. 3 is a perspective view of the gummed strip, the pager and gum layers being separated at one en In the practice heretofore of making gummed hands, it has been the custom to pass a large sheet of paper through a gumming machine, the machine being so controlled as to to deposit thin bands of adhesive at spaced intervals and on one side of the sheet. The sheet or roll after being removed from the machine was suspended in a drying compartment until the glue became hard and dry. The roll or sheet was then passed through cuthaving gummed areas by which the edges or ends of the bands or wrappers might be secured. The glue bands upon drying curled inwardly forming depressions along the sheet of paper. The curl persisted even after the sheets were cut up to form bands and, in

cases where the adhesive was applied along thev ends or edges, the curl became more pronounced.

It has also been the practice in some plants ting machines so as to form bands or wrappers to subject the sheet having bands of adhesive thereon to uncurling or non-curling operations. However, the pressure which was needed to remove the curl from the gummed area resulted in a breaking up of the face of the glue into a large number of diamond shaped segments. The splitting up of the body of glue into minute fragments resulted also in a tearing or dissipating of the paper fibers to which the glue was fixed.

Another disadvantage of theprocess heretofore used was that production was hampered because of the large sheets which were passed through the gluing machines and which had to be dried before further steps could be taken. For example, in an operation upon one sheet or roll of paper, glue might be applied to a few widely separated bands or streaks which together would not cover more than one-twentieth of the area of the sheet.

I have discovered that the production of gummed paper strips can be greatly s eeded up and .at the same time the objectionable curling of gummed areas avoided by using the following method: I first pass a sheet of paper through the'gumming machine so as to cover the entire surface on each side thereof with adhesive. The gummed sheet, after drying, is then cut into a large number of narrow strips which are preferably formed in rolls. The strips are then secured, at the desired intervals, to a wide sheet or roll of paper. One side of the stri 5 may be moistened to make the adhesive t'ac y and the strips may be brought into contact with a sheet or roll of paper and secured thereto by pressure.

Referring to the drawing, the numeral 1 represents a web or sheet of paper to which has been secured by. the method just described, or any other suitable method, a number of gummed strips 2.. As shown more clearly in Fig. 3, each gummed strip 2 comprises a central web 3 of paper and adhesive layers 4 on opposite sides of the web. The sheet 1 may be divided by the strips 2 in any desirable way. Thestrips 2 may be wide or narrow and the distancebetween the strips may be great or slight depending upon the purpose which the finished product is to serve.

If it is desired to form bands having, for example one end gummed so that it may be readily secured about an object, the sheet 1 may be severed along the transverse dotted lines 5 and along the longitudinal dotted lines 6. It will be noted that each of the gummed strips 2 is divided and provides gummed ends for bands on both sides of the strip. In this manner, a large number of bands can be cut from a single sheet with relatively few operations. The cutting of the strips 2 along a transverse lineis facilitated by the fact that the'strips lie flat upon the sheet or web 1.

Curling of the gummed area, both on the sheet or web 1 and also upon the finished band or other product, is avoided by employing gummed strips 2 which have adhesive on both sides. The tension of the glue on one side counteracts the tension of the glue on the opposite side and the strip lies flat on the one side of said strips and pressing said strips against said web, and cutting said web into sections each of which is provided with a portion of said gummed strips.

by means of the adhesive on one side thereo FERDINAND W. HUEMPFNER.

sheet 1, and on the finished product. Since no uncurling or non-curling operation is re quired, the time which would be lost in this operation is saved and the fibers of the paper under the gum layer are not torn or dissipated. By the process described, I also avoid the weakened joint or hinge line which existed under the old practice along the edge of the adhesive band or streak. The finished product in the form of a band has a reinforced sealing edge which overlaps the opposite edge of the band and is cemented theretoby the adhesive. If a wrapper is formed in accordance with the process above, the overlapping edges of the wrapper form a tight closure, sealing the contents of the package against dust, etc.

While in the illustration given, I have described the invention in connection with the makingof hands, it will be understood that The foregoing detailed description. has.

been given for clearness of understanding only and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible in view of the prior art.

I claim:

1. A process for 'gumining a paper web, comprising preliminarily mining a strip of paper on both sides, securlng the strip to the paper web by means of the adhesive on one side of said strip, and cutting said web to forma plurality of strips, each of which is equipped with a portion of said first mentioned gummed strip.

2. A process for gumming paper, comprisin gumming a plurality of strips on both sides, securing said strips in spaced relation A upon a paper web by moistening the gum on 

